Samsung UN46EH5300FXZA cycling on and off

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  • blake.s
    Senior Member
    • Jan 2018
    • 123
    • United States

    #1

    Samsung UN46EH5300FXZA cycling on and off

    I have a Samsung UN46EH5300FXZA that is cycling on and off when powered on. When i unplug the mainboard from the power board and plug the power back in the backlights stay on for a longer period of time. I also check the connector between the powerboard and backlights and there is no sign of issues with arcing.
  • nomoresonys
    Badcaps Legend
    • Jan 2013
    • 12206
    • U.S.

    #2
    Re: Samsung UN46EH5300FXZA cycling on and off

    When you do that test the backlights should stay on as long as the board has power so you are saying that they stay on longer but still shut off??
    Quit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.

    Comment

    • blake.s
      Senior Member
      • Jan 2018
      • 123
      • United States

      #3
      Re: Samsung UN46EH5300FXZA cycling on and off

      They were not shutting off at all actually. They stayed on until i unplugged the tv from power. With the mainboard plugged into power it would turn on, show the input, and then shut off and then repeat itself.

      Comment

      • nomoresonys
        Badcaps Legend
        • Jan 2013
        • 12206
        • U.S.

        #4
        Re: Samsung UN46EH5300FXZA cycling on and off

        Ok, so looks like the powerboard and backlights are good then, could be a mainboard issue.
        Quit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.

        Comment

        • Diah
          Badcaps Legend
          • Feb 2013
          • 6396
          • Germany

          #5
          Re: Samsung UN46EH5300FXZA cycling on and off

          try very fast after it turn on to change the picture mode brightness to low one. ( you should do it with out any signal source just stand alone )
          Last edited by Diah; 07-23-2020, 11:27 AM.

          Comment

          • blake.s
            Senior Member
            • Jan 2018
            • 123
            • United States

            #6
            Re: Samsung UN46EH5300FXZA cycling on and off

            I figured out it was the motherboard that was causing the issues. I could even use the menu functions when the tv would power on for the couple seconds that it would. Thanks for the input.

            Comment

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